When a ray of light passes from a denser medium to a rarer medium,
it bends away from the normal.
it bends at 900.
it goes undeviated.
it bends towards the normal.
When light rays goes from a denser medium to a rarer medium, it bends away from the normal.
When a ray of light from air enters a denser medium, it :
(a) bends away from the normal
(b) bends towards the normal
(c) goes undeviated
(d) is reflected back.